Brake assist senses emergency braking by detecting the speed at which the driver presses the brake pedal and immediately applying all available power boosts .brake assistance can potentially reduce overall stopping distance by eliminating the delay caused by a common human tendency of braking hard enough or soon enough.
HISTORY

Mercedes originally invented this system in the 1990â„¢s to shorten emergency stopping distances takes over if a driver applies the brakes quickly but too gently in a critical situation. The system automatically develops maximum brake boost with split-second speed, so reducing the stopping distance by a significant margin.
Driver does not step forcefully enough on the brake in an emergency. As a result, only a small amount of brake force is generated.
The pedal effort of this type of driver might weaken as time passes, causing a reduction of braking force.
Based on how quickly the brake pedal is depressed, brake assist assesses the intention of the driver to apply emergency braking and increases the brake force.
After the brake assist operation, if the driver intentionally releases the brake pedal, the assist operation reduces the amount of force simultaneously.
Conclusion

Innovative technology
Impressive proof of the effectiveness of Brake Assist
Also be developed into an autonomous braking system
Less accidents hence less fatalities
Allows the driver feel safer in his car

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ABSTRACT
Brake assist senses emergency braking by detecting the speed at which the driver presses the brake pedal and immediately applying all available power boosts. Brake Assist can potentially reduce overall stopping distance by eliminating the delay caused by a common human tendency of not braking hard enough or soon enough. Of course, in actual driving situations, braking effectiveness also depends on proper brake system maintenance and tire and road conditions.
The system developed by Mercedes-Benz to shorten emergency stopping distances takes over if a driver applies the brakes quickly but too gently in a critical situation. The system automatically develops maximum brake boost with split-second speed, so reducing the stopping distance by a significant margin.
Tests provide impressive proof of the effectiveness of Brake Assist: on a dry road, most drivers need up to 73 meters for an emergency stop at 100 km/h, since they apply the brakes too gently. With Brake Assist, the car can be brought to a standstill after just 40 meters, a reduction of 45 per cent.Brake Assist History
Mercedes originally invented the brake assist system in the 1990’s. Their tests showed that although many drivers, especially women, reacted quickly in emergency situations, they did not apply enough pressure to the brake pedal to be completely effective. Their results also showed that drivers tend to apply the brake with less force in the initial stages of a potentially dangerous situation, and then increase the pressure as they moved further into that situation. The time spent in making the decision to apply the brakes with full force, even if it was only a delay of a split-second, meant that the car was not able to stop as soon as it would have if full pressure had been applied to the brake pedal immediately. Other studies also made engineers believe that the pulsing experienced when antilock brakes were engaged was mistakenly interpreted as a problem by inexperienced drivers, who then reduced the pressure on the brake pedal too early and inadvertently increased their risk of an accident. Mercedes theorized that if the car could sense when a driver was applying the brakes in a panic stop situation and automatically go to full force, regardless of how hard the driver pushed the pedal, stopping distances could be greatly reduced and many accidents avoided as a result.Brake Assist
Brake Assist (BA) is a new technology that ensures that the maximum pressure is applied by the brakes to stop a vehicle in an emergency situation. Some manufacturers also refer to the same system as Emergency Brake Assist (EBA). Working and its advantages
When a driver makes an emergency stop the brake pedal has to be pressed, the more pressure applied to the brake pedal, the greater the pressure through the braking system, which is amplified and provided to the brake.
In some cases a driver might fail to respond to a hazard up ahead as well as possible and fail to depress the brake pedal fully, meaning that the full pressure of the braking system is not being applied to the wheels. Brake Assist detects how quickly the pedal is depressed to judge whether the driver wanted to perform an emergency-braking man oeuvre. If it concludes that the situation is an emergency and the pedal isn’t depressed fully then it will increase the hydraulic pressure in the braking system to make up the gap. If the driver successfully avoids the danger and removes or reduces the force on the pedal then the system will also reduce its involvement. Brake Assist in a vehicle
The system will not reduce the stopping distance of the car, but it will make sure that the car is stopped in the shortest distance that it potentially could by compensating for any hesitancy in applying the brakes hard in an emergency situation.
Brake Assist is based on the ABS technology of a vehicle and will not be found on a vehicle without ABS. It should not change how drivers respond to an emergency – you should still brake as hard as possible. Like all braking systems on a vehicle, it is safest to never get into an emergency situation where you need to use them. The best way of doing this is to ensure there is at least a two second gap between yourself and the vehicle in-front, and to drive at a speed suitable for the conditions. Working of Brake assist using diagram
1. Driver does not step forcefully enough on the brake in an emergency. As a result, only a small amount of brake force is generated.
2. The pedal effort of this type of driver might weaken as time passes, causing a reduction of braking force.
3. Based on how quickly the brake pedal is depressed, brake assist assesses the intention of the driver to apply emergency braking and increases the brake force.
4. After the brake assist operation, if the driver intentionally releases the brake pedal, the assist operation reduces the amount of force simultaneously.

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